Effect of green tea and oregano extracts fed to preweaned Jersey calves on behavior and health status
The aim of this study was to evaluate the effects of green tea (Camellia sinensis) and
oregano (Origanum vulgare) extracts on behavior, weight gain, and health indicators of dairy
calves from birth to 60 days of age. Twenty-one Jersey calves were distributed into three
treatments: without additives (CON); green tea extract (GT): supply of 30 mg/kg of body
weight/day; and oregano extract (OR): supply of 60 mg/kg of body weight/day. Observers
registered animal's behavior at 5-minute intervals from 8: 00 to 16: 00, three times a week …
oregano (Origanum vulgare) extracts on behavior, weight gain, and health indicators of dairy
calves from birth to 60 days of age. Twenty-one Jersey calves were distributed into three
treatments: without additives (CON); green tea extract (GT): supply of 30 mg/kg of body
weight/day; and oregano extract (OR): supply of 60 mg/kg of body weight/day. Observers
registered animal's behavior at 5-minute intervals from 8: 00 to 16: 00, three times a week …
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